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Hydrogen production by catalytic methane decomposition and catalyst regeneration by oxygen mixtures in fluidised and fixed bed reactors
by Giovanna Ruoppolo, Paola Ammendola
International Journal of Nuclear Hydrogen Production and Applications (IJNHPA), Vol. 2, No. 1, 2009


Abstract: In the present paper, the Thermo-Catalytic Decomposition (TCD) of methane has been investigated in a laboratory-scale bubbling fluidised bed reactor using copper dispersed on γ-alumina as a catalyst. The usefulness of a fluidised bed operation instead of a fixed bed operation has been assessed in terms of methane-to-hydrogen conversion and the amount of carbon accumulated on the catalyst. The possibility of carrying out a two-stage operation for hydrogen production from methane TCD in fluidised bed reactors, which consists of operating the fluidised bed as a reactor for methane decomposition until a defined catalyst deactivation degree is achieved and then operating the fluidised bed as a combustor for catalyst regeneration by carbon oxidation, has also been investigated. The typical behaviours of fluidised bed reactors contribute to the opportunity to adopt such a regeneration strategy on the basis of the performances obtained with catalyst regeneration by means of carbon combustion in fixed and fluidised bed reactors.

Online publication date: Fri, 13-Mar-2009


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